{
  "manageEntity": {
    "action": "Update",
    "entityId": "428879",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabz63e6aotbsgivkxn6zv5lrquyrnb2bafmv2vfjkpi55nlr42ata\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1226179010},{\"type\":\"playlist\",\"playlist_id\":1962804186}]}}}",
    "nonce": "0x4a53eefa1436620bb8f03d025f0403fbfd8a275920321df36d409e28e7d5710c",
    "signature": "0x2d0cf801acb6266d552205bcbc128783d90dfd743062b11dec1bbfe166626d71469235c6257ecbbb83a14625dee2d358311bd9b2f391714bd18f707cdf635bfe1c",
    "signer": "0x3F1C0f5BE1B341ca06Ca0f74d5D51cb75D9C714e",
    "userId": "428879"
  }
}